16QAM OFDM-PON based on polar code and CCDM joint chaotic encryption

Author:

Zhong Yanchi1,Liu Bo1,Ren Jianxin1,Ullah Rahat1ORCID,Wu Xiangyu1,Bai Yu1,Mao Yaya1,Li Ying1,Wu Yongfeng1,Zhao Lilong1

Affiliation:

1. Nanjing University of Information Science & Technology

Abstract

A new optical transmitting scheme based on chaotic constant component distribution matcher (CCDM) and Polar coding was proposed. The data is first encrypted by Polar coding using a five-dimensional chaotic sequence. Then the encrypted data is divided into two paths to perform chaotic CCDM encryption operations with different schemes. Finally, the two channels are merged, and the subcarriers are scrambled. The transmission experiment of 16QAM-OFDM signal on 2 km seven-core fiber is conducted to verify the scheme's feasibility. The experimental results show that the received optical power of all ONUs is less than −15dBm when the BER of all ONUs is reduced to less than 10−3. In addition, the key space of the proposed system reaches 1085, and the security performance is further enhanced. The advantages of BER and safety performance make this two-path chaotic encrypted OFDM-PON with an optimistic application prospect in the current optical transmission systems.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Jiangsu Provincial Key Research and Development Program

Natural Science Research of Jiangsu Higher Education Institutions of China

Startup Foundation for Introducing Talent of Nanjing University of Information Science and Technology

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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